Homeowner had errors pop up on their 1050 thermostat control showing ERR. 184.03 LSSP CLG CO numerous times. Problem description: low suction pressure protection in cooling mode (5 minute soft lockout) **suction pressure less than 50 PSIG **5 occurrences within approx. 5 hours will result in universal hard lockout (184.08) Possible Casues: Low charge EEV pump down Low side restriction Press transducer out of calibration or failure Checked system in test mode and let stabilize for 20 minutes System is operating at this time as designed (see MQ photo) No none issues at this time outside of a low cooling evaporator load (below 68*) inside temperature. Showed Mike and explained we cannot start replacing parts unless we know what is wrong and agreed with he assement Mike had to leave for the airport Deployed all air probes, line temps and pressure probes connected to measure quick Cycled through thermostat control for any other errors and none present except where the power was cycle
DCM1 complete; Heat; (2) Aprilaire 313 replaced ( homeowner provided ). System is fully functional. All components are operating within manufacturer specifications. Refrigerant pressures and temperatures are appropriate for indoor and outdoor conditions. Heat checklist attached Upstairs ductwork on the backside of the home is either sweating or leaking. The soffit is beginning to get discolored from some type of bacterial growth. Homeowner request quote to remove soffit ( homeowner will do this ), ensure ductwork is sealed from flex to boot and boot to floor. Then insulate ductwork and boot. 3 ducts total
DCM1 service 1 of 2 AC completed checked (2) Aprilair filters. Tested system operations everything is operating properly at this time. Attached is AC maintenance checklist.
Arrived to high humidity and overall comfort dissatisfaction System was initially, at installation, cooling properly. Thermostat failed and when new thermostat was installed system failed to perform as it had previously. Re-programmed thermostat through installation wizard. System has more than sufficient ductwork, operating TESP 2.0 in WC Main floor zone 138% Basement zone 75% Setup zone dampers at: upstairs 80%, upstairs was set at 100%. Floor was receiving 3 tons of conditioned air in a space designed for 2.5 performing like an oversized system. Reaching set temp too fast, not allowing proper runtime for dehumidification. Basement : 30%, to be allowed voting Setup AHU and thermostat for Electric Heat, AHU was set on Park and Thermostat set on 3 stage indoor heat. AHU now setup for 10k heat and thermostat setup for 2 stage indoor heat System has a fresh 8in fresh air intake. Dampered fresh air intake down to 1/4.